Radar-communication integrated realizing method

An implementation method and radar technology, applied in wireless communication, baseband systems, instruments, etc., can solve problems affecting flexibility, direction restrictions, etc.

Inactive Publication Date: 2016-03-23
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Application Information

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Problems solved by technology

Radar detection is performed at the same time as communication. The advantage of the simultaneous system is that radar detection can be performed at the same time as communic

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Embodiment Construction

[0022] Such as figure 1 As shown, the present invention mainly includes three parts: signal generation, communication detection and radar detection.

[0023] The specific implementation steps are as follows:

[0024] Step 1: Communication symbol {a n} is the input symbol sequence of pulse shaping, and its value is a in the case of binary n = 0, 1 or a n =-1, +1. Therefore, the baseband signal d(t) corresponding to the sequence is expressed as:

[0025] d ( t ) = Σ n = - ∞ ∞ a n δ ( t - nT s )

[0026] Among them, T s is the symbol period, δ(t) is the impulse string, t is the time variable, and n represents the nth symbol. After the communication sym...

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Abstract

The invention provides a radar-communication integrated realizing method. According to the radar-communication integrated realizing method, based on analysis on the characteristics of the ambiguity function of transmitted signals of a communication system, communication signals are directly transmitted when the number of transmitted code elements in one transmission period satisfies requirement; the communication code elements pass through a pulse type shaping filter; obtained signals are transmitted out through using a transmitter and by means of an antenna; a receiving end carries out radar detection processing on the signals directly using the communication signals; the receiving end carries out demodulation on the signals through a receiver, so that baseband signals can be obtained; the baseband signals pass through a matched filter, so that an output signal to noise ratio is maximum; if a function which is to be realized by the system is a communication function, sampling judgment is performed on the demodulated baseband signals, so that the communication function can be realized through communication code element information; and if a function which is to be realized by the system is a radar function, a certain code element accumulation is performed on the signals, so that high radar resolution can be obtained, and time delay and Doppler frequency are extracted through using related technologies, and a radar detection function can be finally realized.

Description

technical field [0001] The invention belongs to electronic communication technology. Background technique [0002] From the history of the development of electronic equipment, military needs and technological progress jointly promote the continuous development of electronic equipment. With the widespread application of information technology in the military field, a new round of military reform based on information technology, centered on information superiority, and guided by high-tech weapons has begun. The integration of sea, air and space warfare, so electronic equipment is also developing towards the trend of integration. [0003] For a long time, the radar field and the communication field have been strictly separated due to the different research objects. As a result, most of the current research studies the radar system and the communication system separately. In fact, radar and communication are typical ways of information acquisition, processing, transmission and...

Claims

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Application Information

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IPC IPC(8): G01S7/28H04L25/02H04W64/00
CPCG01S7/2813H04L25/0212H04W64/00
Inventor 李万春田正武王斌唐遒
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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